Troubleshooting guide

6-24
ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
Chapter 6 Troubleshooting Switch Router ATM Network Connections
Troubleshooting SVC Connections on a PNNI Routing Network
Step 10 In privileged EXEC mode, use the no atm signalling diagnostic enable command to disable ATM
signaling diagnostics.
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# no atm signalling diagnostics enable
Debugging PNNI SVC Routing
Use the following commands to debug Private Network-Network Interface (PNNI) SVC routing:
Follow these steps to enable PNNI routing debugging for the originating end switch router UNI interface.
Step 1 Use the debug atm pnni route-all atm command to enable PNNI routing debugging for RemDvLs1
ATM 3/1/1.
Step 2 Retry to set up the SVC from EndSys1.
Step 3 Turn off further debug printouts with the no debug all command.
PNNI: Rcvd UBR Route Req to addr 47.0091810000000060705BD900.123412344321.11
PNNI: Looking For Nodes That Advertise This Prefix
PNNI: Best Match Is 47.0091810000000060705BD900.000000000000.00/104
PNNI: Found 1 POAs
priority: 2 (12 0 ) pnni-remote-internal
PNNI: Compute On-Demand Route Based On Admin Weight
PNNI: Found A 1 Hop Route To Destination
PNNI: SOURCE ROUTE
DTL 1> 2 Nodes
DTL 1> 56:160:47.00918110000000613E7B2F01.00613E7B2F99.00 ATM0/1/1
DTL 1> 56:160:47.009181100000006122222222.006122222222.00 ATM0/3/1
DTL 2> 2 Nodes
DTL 2> 24:40:47.009181100000000000000000.0060705BAD01.00 4276000
24:160:47.009181000000060705BD900.0060705BD900.00 0
PNNI: Found 1 Ports To Next DTL Node 12 ATM0/1/1
PNNI: Send Source Route Reply To Requestor: Code PNNI_SUCCESS
Step 4 Check printouts for correct service class, correct target address, and for at least 1 POA (Point of
Attachment) at the target node. If no best match or POAs were found, proceed to the “Checking ATM
Routes” section on page 6-25.
Step 5 Check to see whether at least one Ports to Next DTL Node n was found. If no ports were found, check
for proper UNI/NNI interface configuration and status on the interfaces to the next indicated node n.
Note Use the show atm pnni identifiers command to determine the node that node n represents.
Command Purpose
debug atm pnni route-all atm Confirms the SVC connection PNNI
routing.
no debug all Turns off debugging.